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GRE Sample Test 2 Quantitative Reasoning 1
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© examsnet.com
Question : 4
Total: 20
Quantity A :
The average (arithmetic mean) of 67, 78, x, and 101
Quantity B :
The average (arithmetic mean) of 66, 79, x, and 102
Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.
Validate
Solution:
The average is the sum divided by the number of elements. Because three elements make up both averages, you can simply compare the sum of each set. 67 + 78 + 101 + x = 246 + x, and 66 + 79 + 102 + x = 247 + x.
Thus, Quantity B is greater.
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